Antipollution fault.

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My Name: DanniAgro

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Posts: 28
Joined: Mon Feb 27, 2017 3:53 pm
Model: C3 2002-2005, Original shape model
Year: 2006 (56)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 105000
Trim Level: LX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU1 (60 PS)
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After driving my new C3 for two weeks, it has been fine with no fault notices shown, but now, after changing one of the water hoses (which meant the battery was disconnected for quite a few hours), I keep getting the notification "Fault - antipollution". At the same time the orange antipollution warning light is on most of the time.
As it's a 2006 model, am I right in thinking that my car doesn't have a dpf or much in the way of sophisticated anti emissions equipment?
I haven't connected an OBD to my car, and I don't have Lexia, but would this notice be caused by an electrical anomaly, given that it didn't appear before the battery was disconnected?
Thanks for any help.
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My Name: C3CAR

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Posts: 2614
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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Been thanked: 88 times

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DanniAgro wrote:I haven't connected an OBD to my car
You should do this to save a lot of guessing and poking in the dark ;)

Cheap enough OBD (like this from Amazon) can speed things up quickly.

DPF/FAP appears on some of the 1.6 HDi models.
My Name: DanniAgro

Top Contributor
Posts: 28
Joined: Mon Feb 27, 2017 3:53 pm
Model: C3 2002-2005, Original shape model
Year: 2006 (56)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 105000
Trim Level: LX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU1 (60 PS)
Been thanked: 1 time

Post

I took your suggestion to heart and when I got home, connected up an OBD analyser to my C3.
It gave these results:

1. Turbo boost sensor A circuit high
2.
3. Turbo boost sensor A circuit high
4.
5.Mass or vol Air Flow A circuit intermittent
6. Intake air Temp Sensor1 circuit high

This result made me scratch my head, and so as I was passing my small local garage, popped in to talk to the owner. He told me that these sorts of results were common for Citroen, and that it was a minefield diagnosing this type of fault. However, he suggested that I should start by renewing the MAP sensor, a snip at £43 from Eurocarparts. (Click HERE) for the part at EuroCarParts after entering your reg.
Luckily, on starting the engine after the change, the antipollution fault warning and light went out, so the problem is solved, hopefully permanently.
Hopefully this might help someone in the same situation.
User avatar
My Name: C3CAR

Guru
Posts: 2614
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 146 times
Been thanked: 88 times

Post

DanniAgro wrote:1. Turbo boost sensor A circuit high
2.
3. Turbo boost sensor A circuit high
Looks like MAP sensor problems, as you local garage suggested. The MAP is the Manifold Air pressure sensor and the turbo generates most of this pressure when its running.

This is the MAP sensor on Euro Car Parts (click here for the part)

MAP sensor for a Citroen C3 HDi antipollution fault
MAP sensor for a Citroen C3 HDi antipollution fault
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and having a cheap OBD scanner to hand (available on Amazon) gave you the codes to find the fault. Overall the cost is less than one diagnosis by a Citroen dealer. Great saving :D
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